When you pay for your Starbucks grande latte, it may be hard to imagine that the coffee chain is making billions of dollars on brew—even at five bucks a pop. But it is. At number 121 on this year’s Fortune 500, it’s pulling in higher revenues than any other food service business on the list. But Starbucks CEO Kevin Johnson wants more. He has his eye set on boosting sales in two markets: the U.S., and China.